/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:31:26,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:31:26,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:31:26,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:31:26,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:31:26,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:31:26,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:31:26,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:31:26,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:31:26,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:31:26,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:31:26,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:31:26,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:31:26,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:31:26,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:31:26,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:31:26,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:31:26,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:31:26,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:31:26,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:31:26,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:31:26,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:31:26,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:31:26,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:31:26,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:31:26,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:31:26,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:31:26,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:31:26,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:31:26,688 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:31:26,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:31:26,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:31:26,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:31:26,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:31:26,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:31:26,691 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:31:26,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:31:26,691 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:31:26,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:31:26,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:31:26,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:31:26,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:31:26,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:31:26,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:31:26,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:31:26,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:31:26,693 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:31:26,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:31:26,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:31:26,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:31:26,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:31:26,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:31:26,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:31:26,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:31:26,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:31:26,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:31:26,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:31:26,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:31:26,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:31:26,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:31:26,695 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:31:26,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:31:26,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:31:26,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:31:26,919 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:31:26,920 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:31:26,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-01-27 19:31:28,104 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:31:28,403 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:31:28,404 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-01-27 19:31:28,426 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1d5af5a/60096bca177e4997b6ee1aed4f530d42/FLAGfb5b5a039 [2023-01-27 19:31:28,441 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1d5af5a/60096bca177e4997b6ee1aed4f530d42 [2023-01-27 19:31:28,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:31:28,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:31:28,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:31:28,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:31:28,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:31:28,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:31:28" (1/1) ... [2023-01-27 19:31:28,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480508ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:28, skipping insertion in model container [2023-01-27 19:31:28,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:31:28" (1/1) ... [2023-01-27 19:31:28,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:31:28,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:31:28,928 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-01-27 19:31:28,944 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:28,945 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:28,945 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:28,947 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:28,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:31:29,012 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:31:29,036 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2023-01-27 19:31:29,039 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:29,039 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:29,039 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:29,040 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:31:29,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:31:29,101 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:31:29,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29 WrapperNode [2023-01-27 19:31:29,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:31:29,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:31:29,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:31:29,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:31:29,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,180 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 225 [2023-01-27 19:31:29,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:31:29,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:31:29,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:31:29,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:31:29,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:31:29,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:31:29,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:31:29,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:31:29,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (1/1) ... [2023-01-27 19:31:29,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:31:29,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:31:29,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:31:29,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 19:31:29,329 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-27 19:31:29,329 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-27 19:31:29,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:31:29,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:31:29,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:31:29,330 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:31:29,497 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:31:29,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:31:29,825 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:31:29,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:31:29,834 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-27 19:31:29,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:31:29 BoogieIcfgContainer [2023-01-27 19:31:29,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:31:29,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:31:29,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:31:29,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:31:29,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:31:28" (1/3) ... [2023-01-27 19:31:29,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443740e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:31:29, skipping insertion in model container [2023-01-27 19:31:29,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:31:29" (2/3) ... [2023-01-27 19:31:29,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443740e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:31:29, skipping insertion in model container [2023-01-27 19:31:29,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:31:29" (3/3) ... [2023-01-27 19:31:29,843 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2023-01-27 19:31:29,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:31:29,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:31:29,857 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:31:29,941 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-27 19:31:29,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 233 transitions, 474 flow [2023-01-27 19:31:30,088 INFO L130 PetriNetUnfolder]: 28/249 cut-off events. [2023-01-27 19:31:30,088 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-01-27 19:31:30,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 249 events. 28/249 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 387 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-01-27 19:31:30,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 233 transitions, 474 flow [2023-01-27 19:31:30,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 228 transitions, 461 flow [2023-01-27 19:31:30,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:31:30,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 228 transitions, 461 flow [2023-01-27 19:31:30,131 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 228 transitions, 461 flow [2023-01-27 19:31:30,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 228 transitions, 461 flow [2023-01-27 19:31:30,181 INFO L130 PetriNetUnfolder]: 27/244 cut-off events. [2023-01-27 19:31:30,182 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:31:30,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 244 events. 27/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 337 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-01-27 19:31:30,188 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-01-27 19:31:43,212 WARN L222 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:31:49,672 WARN L222 SmtUtils]: Spent 6.46s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:31:59,453 WARN L222 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:32:00,076 INFO L134 LiptonReduction]: Checked pairs total: 3792 [2023-01-27 19:32:00,077 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-01-27 19:32:00,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:32:00,093 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1562dd10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:32:00,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 19:32:00,099 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-01-27 19:32:00,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:32:00,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:32:00,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-27 19:32:00,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:32:00,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:32:00,104 INFO L85 PathProgramCache]: Analyzing trace with hash -620848509, now seen corresponding path program 1 times [2023-01-27 19:32:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:32:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096372146] [2023-01-27 19:32:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:00,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:32:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:32:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:32:00,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:32:00,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096372146] [2023-01-27 19:32:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096372146] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:32:00,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:32:00,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:32:00,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88336781] [2023-01-27 19:32:00,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:32:00,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:32:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:32:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:32:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:32:00,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 470 [2023-01-27 19:32:00,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:00,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:32:00,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 470 [2023-01-27 19:32:00,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:32:00,838 INFO L130 PetriNetUnfolder]: 48/113 cut-off events. [2023-01-27 19:32:00,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:32:00,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 113 events. 48/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 292 event pairs, 33 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-01-27 19:32:00,843 INFO L137 encePairwiseOnDemand]: 457/470 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-27 19:32:00,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-01-27 19:32:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:32:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:32:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-01-27 19:32:00,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451063829787234 [2023-01-27 19:32:00,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-01-27 19:32:00,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-01-27 19:32:00,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:32:00,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-01-27 19:32:00,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:00,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:00,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:00,887 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 636 transitions. [2023-01-27 19:32:00,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-01-27 19:32:00,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:32:00,891 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-01-27 19:32:00,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-27 19:32:00,896 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-01-27 19:32:00,897 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-01-27 19:32:00,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:00,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:32:00,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:32:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:32:00,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:32:00,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:32:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 491945045, now seen corresponding path program 1 times [2023-01-27 19:32:00,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:32:00,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472629140] [2023-01-27 19:32:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:32:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:32:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:32:01,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:32:01,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472629140] [2023-01-27 19:32:01,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472629140] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:32:01,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:32:01,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:32:01,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966288095] [2023-01-27 19:32:01,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:32:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:32:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:32:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:32:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:32:01,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-27 19:32:01,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:32:01,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-27 19:32:01,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:32:01,175 INFO L130 PetriNetUnfolder]: 48/115 cut-off events. [2023-01-27 19:32:01,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:32:01,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 115 events. 48/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 33 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 212. Up to 100 conditions per place. [2023-01-27 19:32:01,176 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-01-27 19:32:01,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-01-27 19:32:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:32:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:32:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2023-01-27 19:32:01,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44893617021276594 [2023-01-27 19:32:01,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2023-01-27 19:32:01,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2023-01-27 19:32:01,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:32:01,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2023-01-27 19:32:01,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,185 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 633 transitions. [2023-01-27 19:32:01,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-01-27 19:32:01,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:32:01,187 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-01-27 19:32:01,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-01-27 19:32:01,187 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-01-27 19:32:01,188 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-01-27 19:32:01,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:32:01,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:32:01,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:32:01,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:32:01,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:32:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash 119254294, now seen corresponding path program 1 times [2023-01-27 19:32:01,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:32:01,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013240170] [2023-01-27 19:32:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:32:01,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:32:01,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177468199] [2023-01-27 19:32:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:01,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:01,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:32:01,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:32:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:32:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:32:01,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:32:01,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:32:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:32:01,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:32:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:32:01,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:32:01,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013240170] [2023-01-27 19:32:01,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:32:01,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177468199] [2023-01-27 19:32:01,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177468199] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:32:01,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:32:01,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-01-27 19:32:01,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907155126] [2023-01-27 19:32:01,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:32:01,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:32:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:32:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:32:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:32:01,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-27 19:32:01,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:32:01,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-27 19:32:01,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:32:01,864 INFO L130 PetriNetUnfolder]: 48/121 cut-off events. [2023-01-27 19:32:01,864 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 19:32:01,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 121 events. 48/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 297 event pairs, 33 based on Foata normal form. 6/102 useless extension candidates. Maximal degree in co-relation 219. Up to 100 conditions per place. [2023-01-27 19:32:01,865 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-01-27 19:32:01,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-01-27 19:32:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:32:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:32:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1247 transitions. [2023-01-27 19:32:01,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421985815602837 [2023-01-27 19:32:01,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1247 transitions. [2023-01-27 19:32:01,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1247 transitions. [2023-01-27 19:32:01,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:32:01,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1247 transitions. [2023-01-27 19:32:01,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.83333333333334) internal successors, (1247), 6 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,878 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,878 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 1247 transitions. [2023-01-27 19:32:01,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-01-27 19:32:01,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 19:32:01,880 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-01-27 19:32:01,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-01-27 19:32:01,881 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-01-27 19:32:01,881 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-01-27 19:32:01,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:01,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:32:01,882 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:32:01,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:32:02,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:02,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:32:02,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:32:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -562486123, now seen corresponding path program 2 times [2023-01-27 19:32:02,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:32:02,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519207746] [2023-01-27 19:32:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:02,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:32:02,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:32:02,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729573160] [2023-01-27 19:32:02,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:32:02,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:02,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:32:02,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:32:02,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:32:02,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:32:02,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:32:02,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 19:32:02,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:32:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:32:02,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:32:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:32:02,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:32:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519207746] [2023-01-27 19:32:02,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:32:02,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729573160] [2023-01-27 19:32:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729573160] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:32:02,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:32:02,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-01-27 19:32:02,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303588936] [2023-01-27 19:32:02,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:32:02,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 19:32:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:32:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 19:32:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-01-27 19:32:02,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-27 19:32:02,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 204.41666666666666) internal successors, (2453), 12 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:02,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:32:02,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-27 19:32:02,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:32:03,126 INFO L130 PetriNetUnfolder]: 48/133 cut-off events. [2023-01-27 19:32:03,126 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-01-27 19:32:03,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 133 events. 48/133 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 347 event pairs, 33 based on Foata normal form. 12/120 useless extension candidates. Maximal degree in co-relation 215. Up to 100 conditions per place. [2023-01-27 19:32:03,183 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-01-27 19:32:03,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-01-27 19:32:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 19:32:03,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 19:32:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2474 transitions. [2023-01-27 19:32:03,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43865248226950354 [2023-01-27 19:32:03,195 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2474 transitions. [2023-01-27 19:32:03,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2474 transitions. [2023-01-27 19:32:03,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:32:03,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2474 transitions. [2023-01-27 19:32:03,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 206.16666666666666) internal successors, (2474), 12 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:03,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 470.0) internal successors, (6110), 13 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:03,229 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 470.0) internal successors, (6110), 13 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:03,229 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 2474 transitions. [2023-01-27 19:32:03,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-01-27 19:32:03,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 19:32:03,231 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-01-27 19:32:03,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-01-27 19:32:03,232 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-01-27 19:32:03,232 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-01-27 19:32:03,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 204.41666666666666) internal successors, (2453), 12 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:03,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:32:03,234 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:32:03,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:32:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 19:32:03,435 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:32:03,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:32:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2052217611, now seen corresponding path program 3 times [2023-01-27 19:32:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:32:03,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938122407] [2023-01-27 19:32:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:03,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:32:03,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:32:03,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261346017] [2023-01-27 19:32:03,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:32:03,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:03,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:32:03,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:32:03,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:32:03,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 19:32:03,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:32:03,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:32:03,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:32:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:32:03,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:32:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:32:03,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:32:03,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938122407] [2023-01-27 19:32:03,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:32:03,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261346017] [2023-01-27 19:32:03,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261346017] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:32:03,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:32:03,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-01-27 19:32:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695870847] [2023-01-27 19:32:03,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:32:03,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:32:03,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:32:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:32:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:32:03,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 470 [2023-01-27 19:32:03,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 202.16666666666666) internal successors, (1213), 6 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:03,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:32:03,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 470 [2023-01-27 19:32:03,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:32:04,359 INFO L130 PetriNetUnfolder]: 50/160 cut-off events. [2023-01-27 19:32:04,359 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2023-01-27 19:32:04,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 160 events. 50/160 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 3/138 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-01-27 19:32:04,361 INFO L137 encePairwiseOnDemand]: 466/470 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-01-27 19:32:04,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-01-27 19:32:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:32:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:32:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1235 transitions. [2023-01-27 19:32:04,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379432624113475 [2023-01-27 19:32:04,364 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1235 transitions. [2023-01-27 19:32:04,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1235 transitions. [2023-01-27 19:32:04,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:32:04,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1235 transitions. [2023-01-27 19:32:04,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:04,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:04,372 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:04,372 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 1235 transitions. [2023-01-27 19:32:04,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-01-27 19:32:04,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-01-27 19:32:04,382 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-01-27 19:32:04,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-01-27 19:32:04,384 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-01-27 19:32:04,385 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-01-27 19:32:04,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.16666666666666) internal successors, (1213), 6 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:04,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:32:04,385 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:32:04,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:32:04,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:04,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:32:04,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:32:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1831329205, now seen corresponding path program 4 times [2023-01-27 19:32:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:32:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317983371] [2023-01-27 19:32:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:04,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:32:05,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:32:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870676255] [2023-01-27 19:32:05,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:32:05,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:05,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:32:05,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:32:05,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:32:07,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:32:07,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:32:07,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 9543 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 19:32:07,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:32:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:32:07,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:32:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:32:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:32:07,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317983371] [2023-01-27 19:32:07,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:32:07,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870676255] [2023-01-27 19:32:07,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870676255] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:32:07,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:32:07,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-01-27 19:32:07,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491449015] [2023-01-27 19:32:07,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:32:07,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 19:32:07,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:32:07,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 19:32:07,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-01-27 19:32:07,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 470 [2023-01-27 19:32:07,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 204.33333333333334) internal successors, (4904), 24 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:07,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:32:07,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 470 [2023-01-27 19:32:07,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:32:08,571 INFO L130 PetriNetUnfolder]: 50/208 cut-off events. [2023-01-27 19:32:08,572 INFO L131 PetriNetUnfolder]: For 3489/3489 co-relation queries the response was YES. [2023-01-27 19:32:08,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 208 events. 50/208 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 48/231 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-01-27 19:32:08,573 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-01-27 19:32:08,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-01-27 19:32:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 19:32:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 19:32:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4928 transitions. [2023-01-27 19:32:08,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368794326241135 [2023-01-27 19:32:08,584 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4928 transitions. [2023-01-27 19:32:08,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4928 transitions. [2023-01-27 19:32:08,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:32:08,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4928 transitions. [2023-01-27 19:32:08,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 205.33333333333334) internal successors, (4928), 24 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:08,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 470.0) internal successors, (11750), 25 states have internal predecessors, (11750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:08,616 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 470.0) internal successors, (11750), 25 states have internal predecessors, (11750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:08,616 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 4928 transitions. [2023-01-27 19:32:08,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-01-27 19:32:08,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 19:32:08,620 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-01-27 19:32:08,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-01-27 19:32:08,623 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-01-27 19:32:08,623 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-01-27 19:32:08,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 204.33333333333334) internal successors, (4904), 24 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:32:08,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:32:08,637 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:32:08,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:32:08,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:08,853 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:32:08,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:32:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash -697457845, now seen corresponding path program 5 times [2023-01-27 19:32:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:32:08,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407373460] [2023-01-27 19:32:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:32:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:32:09,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:32:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042641451] [2023-01-27 19:32:09,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 19:32:09,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:32:09,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:32:09,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:32:09,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-27 19:46:04,549 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:46:04,549 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:46:05,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-27 19:46:05,750 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-27 19:46:05,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-27 19:46:05,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-01-27 19:46:05,793 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-27 19:46:05,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 19:46:05,794 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-01-27 19:46:05,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-01-27 19:46:05,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-01-27 19:46:05,795 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-01-27 19:46:05,799 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:46:05,799 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:46:05,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:46:05 BasicIcfg [2023-01-27 19:46:05,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:46:05,802 INFO L158 Benchmark]: Toolchain (without parser) took 877357.06ms. Allocated memory was 373.3MB in the beginning and 539.0MB in the end (delta: 165.7MB). Free memory was 319.6MB in the beginning and 295.0MB in the end (delta: 24.6MB). Peak memory consumption was 189.4MB. Max. memory is 16.0GB. [2023-01-27 19:46:05,802 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 255.9MB. Free memory is still 214.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:46:05,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.55ms. Allocated memory is still 373.3MB. Free memory was 319.3MB in the beginning and 332.4MB in the end (delta: -13.0MB). Peak memory consumption was 20.5MB. Max. memory is 16.0GB. [2023-01-27 19:46:05,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.34ms. Allocated memory is still 373.3MB. Free memory was 332.4MB in the beginning and 329.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:46:05,803 INFO L158 Benchmark]: Boogie Preprocessor took 61.70ms. Allocated memory is still 373.3MB. Free memory was 329.2MB in the beginning and 327.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:46:05,803 INFO L158 Benchmark]: RCFGBuilder took 592.99ms. Allocated memory is still 373.3MB. Free memory was 327.1MB in the beginning and 303.0MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-27 19:46:05,803 INFO L158 Benchmark]: TraceAbstraction took 875963.62ms. Allocated memory was 373.3MB in the beginning and 539.0MB in the end (delta: 165.7MB). Free memory was 302.4MB in the beginning and 295.0MB in the end (delta: 7.4MB). Peak memory consumption was 171.1MB. Max. memory is 16.0GB. [2023-01-27 19:46:05,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 255.9MB. Free memory is still 214.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 656.55ms. Allocated memory is still 373.3MB. Free memory was 319.3MB in the beginning and 332.4MB in the end (delta: -13.0MB). Peak memory consumption was 20.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 77.34ms. Allocated memory is still 373.3MB. Free memory was 332.4MB in the beginning and 329.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 61.70ms. Allocated memory is still 373.3MB. Free memory was 329.2MB in the beginning and 327.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 592.99ms. Allocated memory is still 373.3MB. Free memory was 327.1MB in the beginning and 303.0MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 875963.62ms. Allocated memory was 373.3MB in the beginning and 539.0MB in the end (delta: 165.7MB). Free memory was 302.4MB in the beginning and 295.0MB in the end (delta: 7.4MB). Peak memory consumption was 171.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.9s, 206 PlacesBefore, 25 PlacesAfterwards, 228 TransitionsBefore, 36 TransitionsAfterwards, 3828 CoEnabledTransitionPairs, 6 FixpointIterations, 109 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 19 ConcurrentYvCompositions, 11 ChoiceCompositions, 237 TotalNumberOfCompositions, 3792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3097, independent: 3030, independent conditional: 0, independent unconditional: 3030, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1960, independent: 1938, independent conditional: 0, independent unconditional: 1938, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3097, independent: 1092, independent conditional: 0, independent unconditional: 1092, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 1960, unknown conditional: 0, unknown unconditional: 1960] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1072]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 279 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 875.8s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 30.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 496 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 496 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11265 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown